在apache2中设置默认服务器名virtualhost

Question

我在apache2服务器中使用了以下配置

<VirtualHost *:443>
  ServerName app.example.io

  DocumentRoot /var/www/example/master/workbench/workbench/static

  Alias /static /var/www/example/master/workbench/workbench/static
  Alias /media /var/www/example/master/workbench/workbench/media

  ServerAlias www.app.example.io www.app.example.in prod.example.io

  WSGIDaemonProcess app.example.io   processes=1 threads=5 python-path=/.../workbench:/../.virtualenv/.../python2.7/site-packages/
  WSGIProcessGroup app.example.io
  WSGIPassAuthorization On
  WSGIScriptAlias /api /var/www/example/master/workbench/workbench/wsgi.py

  <Directory /var/www/example/master/workbench/workbench/static >
    Order deny,allow
    Allow from all
    AllowOverride All
  </Directory>
</virtualhost>

<VirtualHost *:443>
  ServerName exmpl.io
  ServerAlias *.*

  Alias /static /var/www/example/master/workbench/workbench/static

  DocumentRoot /var/www/example/master/workbench/workbench/static
  RedirectMatch ^/$ http://example.io
  WSGIDaemonProcess exmpl.io   processes=1 threads=5 python- path=/.../workbench:/.../site-packages/
  WSGIProcessGroup exmpl.io
  WSGIScriptAlias / /var/www/example/master/workbench/workbench/wsgi.py

  <Directory /var/www/example/master/workbench/workbench/static >
    Order deny,allow
    Allow from all
    AllowOverride All
  </Directory>

</virtualhost>

<VirtualHost *:8081>
    ServerName app.example.io

    <Proxy *>
        Order deny,allow
        Allow from all
    </Proxy>

    ProxyRequests Off
    ProxyPreserveHost On

        <Location />
            ProxyPass http://localhost:8080/
            ProxyPassReverse http://localhost:8080/
        </Location>

</VirtualHost>

根据配置，端口 8081 被配置为在主机 app.example.io 上侦听，但代替的是，它在 exmpl.io上工作。

以前可以使用

访问

https://app.example.io:8081

但是现在，它已经开始收听

https://exmpl.io:8081

配置文件似乎没有错误，这可能是什么问题？

命令sudo apache2ctl -S提供以下输出

*:443                  is a NameVirtualHost
         default server help.example.io (/etc/apache2/sites-enabled/myapp.conf:41)
         port 443 namevhost help.example.io (/etc/apache2/sites-enabled/myapp.conf:41)
         port 443 namevhost app.example.io (/etc/apache2/sites-enabled/myapp.conf:62)
                 alias www.app.example.io
                 alias www.app.example.in
         port 443 namevhost exmpl.io (/etc/apache2/sites-enabled/myapp.conf:153)
                 wild alias *.*
*:8081                 app.example.io (/etc/apache2/sites-enabled/myapp.conf:184)

，很明显，端口 8081 指向 app.example.io 。